Hydrogen combustion: Kistler launches a new absolute pressure sensor to measure hydrogen pressure

The emergence of a large-scale hydrogen economy presents challenges in terms of the measurement technology to be deployed. Diffusion and accumulation of hydrogen leads to increased embrittlement of materials; furthermore, diffusion of hydrogen into sensor measuring elements can lead to distortion of measurement results.

Combustion engines operated with hydrogen or alternative H2-based fuels are practically emission-free, and they pave the way for decarbonized mobility. Engine developers need hydrogen-resistant sensors in order to optimize hydrogen combustion. Kistler has responded by developing the 4012A hydrogen pressure sensor, which can be used for gas exchange analysis, as well as pressure measurement in the low-pressure fuel supply rail of hydrogen engines. 

Ongoing fuel cell development opens up an additional approach to achieving a sustainable energy supply. The new 4012A sensor can be used to monitor hydrogen pressure in the low-pressure range of a fuel cell. To do this, the piezoresistive absolute pressure sensor features two measuring ranges: up to 20 bar and 50 bar. 

4012A 绝对压力传感器的设计可满足长期在氢气环境中稳定工作的需求。传感器所有暴露于氢气环境的部件均采用抗氢脆材料制造，其主体表面覆有镀金涂层，有效阻止氢气渗入充油式测量单元。通过多轮严格测试，该传感器的氢气兼容性及抗氢脆性能均达到行业所需标准。

带温度补偿的压阻式绝对压力传感器

4012A 传感器结构紧凑，在 - 20°C 至 50°C 的数字补偿温度范围内，测量精度可达≤1% FSO（满量程误差），工作温度最高可达 80°C。该传感器既可以通过适配的压阻放大器独立运行，也可与奇石乐 KiBox2 燃烧分析仪协同工作。为满足灵活安装需求，提供 M12x1 和 M14x1.25 两种规格的适配器选择。